i read this awhile ago and below is everything i remember about it, please help.

genre: gender bender, historical(maybe)

somewhere in first chapter
main character has a deformity and therefore was called demon/devil by blood mother. He was the third son/prince. Had an english name. Might have been edward or robert. Was definitely named after his father. Main character was Father's favorite son.
main character was depicted at young age as stubbly, wearing a cloak that hid his short body. had huge cartoon eyes with small pupil. has black hair. (like luffy's maybe) (while other characters had normal manga-like eyes) character becomes thin and tall (more manga-like) as he grew up. Has short parted black hair. Still has luffy-like eyes.

later on in the chapters
The enemy is a cowardly king whose wife, the queen, started a war against them. The enemy king is a devout whatever religion it is.
Mc's father, the king, is killed. His mother blames the MC because he lured him by telling his father that a king does not retreat.
MC is revealed to have boobs later on. Guessing is transgender.

Only has around 10-15 translated chapters.
the art is a little on the dark side and cant remember if it was shoujo or josei. has to be one of those.

thanks so much.